Method for treating molten metal

The invention relates to a process of metal melting method of metallurgy container, the adding to the metal melt's surface comprising a silicon and discharge alumina fine granule cladding material. A digital to avoid the dust produced with of the cladding material distribution of metal slot surface; the invention suggested for cladding material is the permutite material, comprising a base the same proportion and silicon aluminium oxide, the cladding material with the narrow diameter particle distributed, namely is short the diameter of 20% pellets with is less than 30 μ m is not more than 125 μ m. According to the invention's further surface, and adding device for collecting to the cladding material, comprising a rice chaff ash.